Possibilities:
- They grew technology advanced and left the planet. Leaving only a few traces of their society.
- They drank the koolaid. Negating any point they had.
- They performed gain of function studies and developed Covidsaurus, wiping themselves out because they hadn't invented masks yet.
- They intermarried with the attractive Figleaf women who had dominant genes.
- The neighboring nation led by chief Putlerass decided they wanted their land and caused the destruction of both nations.
- Here's one now...
